Exactly. And this was for a super super unimportant detail in a campaign. Like which character wakes up first? Holy shit, who cares? Imagine coming to a critical decision, which character dies? Or something goes wrong (like an important roll). That kind of player would derail everything at that point if they already argue for over an hour over bullshit.

I just wanted the guy out, but it was on Roll20 (4 players total, one friend of mine, 3 other online players which were friends), even his friends told him it's annoying, stop it. But they still wanted to give him another chance (and me kicking him straight out would have killed the campaign either way then). Such a waste of time.

On top of that: The moment a player keeps second guessing the DM, like starting to argue about decisions outside the roleplay, you're already doomed. Because one dumb thing gets brought up and that leads into another player chiming up "Npc A doing this also didn't make that much sense.." and then the entire campaign gets dissected.